Improvement in pipe-wrenches



n. P. STANTON.

PIPE-WRENCH. No. 170,201, Patented Nov. 23, 1875.

wihupsses UNITED STATES PATENT OFFICE.

DANIEL P.- STANTON, OF GENTREVILLE, RHODE ISLAND.

IMPROVEMENT IN PlPE-WRENCHES.

Specification forming part of Letters Patent No. 170,201, dated November23, 1875 application filed September 23, 1875.

.To all whom it may concern Be it known that I, DANIEL P. STANTON, ofOentreville, in the county of Kent and State of Rhode island, haveinvented certain Improvements in Pipe-Wrenches, of which the followingis a specification:

This invention consists of a lever with a square angular hook at oneend, and a strap sliding on it, in which is secured a serrated block,the teeth of which fit into a rack on the inside of the lever. A smallerlever, pivoted in the upper part of the strap, has its short enddirected toward the angle in the main lever. I

Figure 1 shows a side view of the wrench. Fig. 2 is the same with a partof the strap removed.

The lever A is made with one end bent up at-about forty-five degrees,then with a return bend of the same angle to the back of the wrench,forming a square book. A rack, a, is out on the inside of this lever,extending from the hook back three or four'inohes. A sliding strap, 0,incloses the lever, and has a block, b, securedto the middle of it, withteeth out in it corresponding with the teeth of the rack a, and athumb-screw, d, in the back of the strap draws the block and levertogether by pressing on the back of the lever, or on a gib, i, insertedin the strap. D is a smaller lever, held in the upper part of the strapby the pivot s. The end of this lever extending toward the hook on leverA is cut away to an obtuse angle, so as to catch, but not out too deepinto, the pipe; The other end of the lever is tapered away and curveddown toward the handle of lever A. The pivot s has a square head, and asquare hole, 0, is made in the end of the lever A, to fit on it, so thatwhen it is necessary to remove the small lever to grind the end of it,the lever A may be slid out of the strap, and the square hole in it usedas a wrench to turn the pivot out with. i

In'using the wrench, the thumb-screw d is first loosened, and the strap0 slid back the lever A is then hooked onto the pipe j, and the strapslid up toward it until the point of the lever D touches the pipe, asseen in the drawing. The thumb-screw is then tightened, and a slightpressure on the curved end of the lever D will cause the point of it tocatch in the pipe, and force being applied to the lever A,

the point will continue to take more hold of the pipe until it issufficient to turn it.

The length of the rack enables the wrench to turn both small and largepipe, by setting the strap toward or from the hook, and the rack-teethprevent the strap from slipping when the thumb-screw is screwed up. Awedge may be used in place of the thumbscrew and gib.

Having thus described my improvements,

what I claimas my invention, and desire to secure by Letters Patent, is-The combination Of the levers D and A, the

latter being hooked and provided with the teeth a, with the strap 0,serrated block b, and thumb-screw d,substantially as described, and forthe purpose set forth.

DANIEL P. STANTON. Witnesses:

F. H. ARNOLD, BENJ. ARNOLD.

